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48 / Profi le-plasty: The Bony and Cartilaginous Nasal Vault
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on still photographs. The old adage, “A picture is worth a thousand words,” is never truer than when using digital imaging to show the aesthetic results that can be accomplished in a cosmetic rhinoplasty operation. This is particularly true in relationship to profile-plasty. Tip projection, its assessment, and the predicted change are very easy to demonstrate with the “soft compare” software, as is the change in the dorsal height. The relationship of the nasal frontal angle and the angle of the nose with the entire face is easily modified on the computer and shown to the patient. Rotation and shortening of the infratip lob­ule is more dramatic on the profile than on the fron­tal view. Even if the imaging is done by an assistant, it is imperative that the surgeon engage in the proc­ess with the patient in front of the imaged pictures to assess the patient’s perception and likes or dislikes.
The frontal view is extremely important to show the patient the change in the width of both the lob­ule and the pyramid itself (Figure 4-4). Computer imaging allows the patient to see the angulation of the nose much more clearly than in a photograph or even in the mirror. Whether or not the nose can be completely straightened can be discussed, and the patient can decide whether a straighter nose is still a worthwhile endeavor based on the pre­existing nasal base asymmetries and asymmetries in the midface. The patient has an opportunity to participate in determining the final imaged result, which can be used as an operative goal by the sur­geon. It is imperative that the surgeon be realistic
and honest regarding his/her own ability to effect the changes shown in the digital image. It is equally as important for the surgeon to show conservative changes that may or may not be the best that the overall result can be. The patient needs to be shown the limitations imposed by skin thickness and other anatomical features that can preclude a more dra­matic change. This is especially true in the case of a patient with an overly large projecting nose but oth­erwise small features. Patients must also understand that they may not be able to obtain a completely reduced nose and still maintain form and func­tion. Some patients must accept that a significant improvement, but still with a large nose, may be more appropriate and harmonious with their facial features. Using the digital imaging, patients are able to visualize how the nasal frontal angle becomes more obtuse with hump reduction and may, in fact, yield a straighter line from the forehead than would otherwise be ideal, or they may see how augmenta­tion of a deep nasal frontal angle effects a pleasant change with lesser hump reduction. They are able to visualize what reducing the nasal dorsal line in rela­tionship to the tip looks like when they desire more than the surgeon initially would recommend. Dig­ital imaging can show them that lowering the nasal dorsum too much produces a poor aesthetic result and consequently patients will accept a stronger profile with minimal supratip depression.
There have been many discussions relating
to the legal risks associated with imaging of the
Figure 4-4. Frontal view of a computer-imaged narrowing of a wide nose.
Profi le-plasty: The Bony and Cartilaginous Nasal Vault / 49
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proposed result prior to rhinoplasty. A major con-
cern has been that patients will develop unrealistic
expectations based on the digital images and may
ultimately be disappointed, due to the variabilities
of healing and the fact that there are no guarantees
about the results. On the contrary, it has been this
author’s experience that digital imaging actually
has the opposite effect; it improves communication
between patients and the surgeon in the preoperative
setting, diminishing patients’ unrealistic expectations
and improving their comfort level for proceeding
with surgery. Furthermore, the digitally altered pho-
tographs may be printed and given to the patient for
further study and for sharing with family and friends.
This allows patients an unhurried opportunity to
consider whether rhinoplasty is right for them and
whether the proposed aesthetic results are what they
want. The photographs are given to patients after
they have signed an imaging consent, which carefully
explains that the images are a two-dimensional rep-
resentation and illustration of the proposed results,
not a guarantee of the results of the final healing.
It is very important that patients understand there
is no “implied guarantee.” The computer imaging
enhances communication between the patient and
the surgeon builds patient/surgeon rapport. It is
incumbent upon the surgeon to be honest about the
imaged results based on his/her own aesthetic evalu-
ation, what is best for the patient, and his/her abilities
to achieve the proposed result.
The Procedures of Profile-plasty
First, it is important to identify the order in which
profile-plasty is to be performed in relationship to
the rest of the rhinoplasty. The beginning of the rhi-
noplasty involves approaching the length of the cau-
dal septum as it relates to the rotation of the nasal
lobule. Shortening the length of the nose by short-
ening the septum is the initial maneuver performed.
This is accomplished by excising a wedge of the ante-
rior caudal septum greater than the posterior angle.
This will allow rotation and releases the nasal lobule
from the septal angle. A complete transfixion inci-
sion is made to begin the steps of de-projection if
this is desired in the profile-plasty. Once the medial
crural feet are released from the caudal septum and
the attachments to the septal angle are interrupted,
tip projection will decrease 2–3 mm. The surgeon
can then appreciate the significant contribution of
the cartilaginous dorsum to the profile. The next
sequence of events is to identify the cephalic margin
of the alar cartilages, either through an endonasal delivery flap approach or an external columellar open approach. Taking the cephalic portion of the alar cartilages that relate to the height of the dorsal profile is important before judging the remainder of the profile reduction. Later tip refinements are done after the dorsal profile is aligned. Once these initial maneuvers are accomplished, the order of proce­dures in profile-plasty is:
Dorsal skin elevation
Pre-elevation of the mucoperichondrium on the
undersurface of the upper lateral cartilages
Separation of the upper lateral cartilages from the septum
Lowering of the cartilaginous dorsal septum
Bony profile reduction, often with an osteotome
Bony rasping
Placement of spreader grafts, if indicated, and
medial osteotomies performed prior to this placement
Medial and lateral osteotomies to reposition the nasal bones and narrow the new, lowered dorsal profile
The profile-plasty begins with incisional ap­proaches and skin and soft-tissue elevation. In endonasal rhinoplasty, the dorsum is approached through bilateral intercartilaginous incisions con­nected with, at least, a high septal transfixion incision. In an external columellar approach, the dorsum is approached from the elevation of the columellar skin and the lobular skin first and is con­nected with bilateral marginal incisions. Elevation is continued superiorly in the supra-perichondrial plane cephalically to the bony cartilaginous junc­tion, where an incision is made bilaterally into the periosteum. The remainder of the dorsal elevation is in the subperiosteal plane up to, and including, the nasion. The dorsal nasal skin is raised in continuity with the periosteum from the rhinion cephalically.
Next it is imperative to begin the middle nasal vault reduction by controlling the middle nasal vault and preventing late contractures and depres­sions of the upper lateral cartilages. First the muco­perichondrium is elevated on the undersurface of the upper lateral cartilages where they fuse with the septum. This forms a pocket for placement of a spreader graft and also prevents reducing the muco­perichondrium in continuity with the dorsal carti­laginous hump reduction. In extremely tall noses, it is sometimes necessary to reduce the mucoperi­chondrial excess, but in most cases preserving the
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mucoperichondrium is the ideal goal. Once the mucoperichondrium has been elevated, the carti­laginous dorsum is lowered in segments. First, the upper lateral cartilages are released from the septum with sharp dissection using a #11 blade. Second, the cartilaginous dorsum is lowered to the appropriate level in relationship to the final tip projection. Bony profile reduction is performed prior to determining if the upper lateral cartilages require trimming. This is necessary if the upper lateral cartilages are redun­dant and not to be used as auto spreader grafts and are contributing to persistent cartilaginous hump. Many times, the upper lateral cartilages are left intact and provide further mid-nasal vault width and support.
Instrumentation for Bony Pro le Reduction
The author’s preference is to use a guarded Cinelli dorsal osteotome for sharp removal of the major­ity of the bony hump (Figure 4-5). This is started under direct vision and then completed with exter­nal bimanual palpation. A sharp Ruben osteotome may be used, but care must be taken to dull the lat­eral edges so as not to injure the dorsal nasal skin as the osteotome proceeds superiorly into the narrow nasal frontal angle. Once the initial bony hump is removed, and prior to any osteotomies, rasping is done with a series of rasps, from coarser to finer. Most commonly, a #4 pull rasp is used initially to lower the remainder of the bony hump, decreasing to 3, 2, and 1 for final smoothing of the bony edges. Occasionally, if the hump is to be reduced primarily
A
B
Figure 4-5. (A) Cinelli guarded dorsal osteotome
(used for hump reduction or profile-plasty). (B) #4 push/pull tungsten carbide rasps.
by dorsal rasping, a #6 wide dorsal rasp is used in a pull fashion to lower the bony hump. Final rasp­ing is done after the osteotomies are performed. The author’s preference is to use a series of rasps, the double-ended pull/push tungsten carbide dorsal rasps nos. 1–6. It is sometimes beneficial to use the push direction of the rasp to lower a very high bony prominence. It is also important to use the push #1 and #2 rasps after the medial and lateral osteotomies so as not to disrupt the nasal bones, pulling them caudally, or to disrupt the nasal bone and upper lat­eral cartilage junction (Figure 4-6).
Figure 4-6. Lateral view of preoperative
patient and postoperative dorsal hump reduction profile-plasty.
Figure 4-7. Frontal view of
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preoperative patient and postoperative single spreader graft placement correcting unilateral asymmetry and a curved nose appearance.
Profi le-plasty: The Bony and Cartilaginous Nasal Vault / 51
Once the predicted dorsal profile line is achieved in relationship to the tip and the facial profile, one must consider stabilizing the middle nasal vault to prevent future retraction of the upper lateral car­tilages, which causes asymmetrical depressions or “hourglass” deformities.
Long experience with hump removal has led many rhinoplasty surgeons to place and use spreader grafts for mid-nasal vault support much more fre­quently than in the past. Spreader grafts are placed either after medial osteotomies are performed or just prior to medial osteotomies, depending on the height of the hump reduced.
Indications for spreader grafts for the mid-nasal vault include:
3
1. Unilateral asymmetry with infracture or inward curvature of the upper lateral cartilages. This is the crooked nose or curved nose (Figure 4-7)
2. Bilateral inward curvature of the upper lateral cartilages with an hourglass appearance, even preoperatively (Figure 4-8).
3. The extremely narrow pyramid with tall mid-
dorsal hump and thin skin, to prevent late development of the “hourglass” deformity (Figure 4-9).
Spreader grafts are best obtained from the car-
tilaginous septum if enough cartilage is present. Spreader grafts can be made from autogenous auricular cartilage and from costal cartilage if larger
Figure 4-8. Frontal view of
preoperative patient and postoperative bilateral spreader graft placement correcting hourglass appearance.
52 / Profi le-plasty: The Bony and Cartilaginous Nasal Vault
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Figure 4-9. Preoperative frontal
view and postoperative frontal view after bilateral spreader graft placement in patient with extremely narrow pyramid, tall mid-dorsal hump, and thin skin.
amounts of cartilage are needed for grafting. The spreader grafts are sutured in place on either side of the dorsal septum with mattressing 5-0 PDS suture (Figure 4-10). Stabilization of the grafts can be per­formed using two 1-inch 30-gauge needles prior to suturing. Placement of spreader grafts is much more easily performed using the external columel­lar approach.4 When using the endonasal approach, after complete cartilaginous hump removal, it can be difficult to place the more cephalic mattress suture. If the hump reduction minimally reduces the cartilaginous dorsum, the surgeon can often maintain a pocket of undisturbed mucoperichon­drium and place the spreader grafts without requir­ing suturing. This can easily be done endonasally. If the patient requires only minimal use of spreader grafts and there is a large redundancy of upper lat­eral cartilage that would otherwise be trimmed, it
Figure 4-10. Bilateral spreader grafts sutured into
place on either side of the dorsal septum.
is possible to use the upper lateral cartilages as auto spreader grafts by just partially incising the cephalic caudal line of the upper lateral cartilages. Leaving the mucoperichondrium intact, the cartilages can be folded inward and sutured directly to the septum, providing mid nasal vault width and support.
Osteotomies
Osteotomies are required after hump removal because the patient has an open roof deformity and a very wide nasal pyramid. It is an error not to per­form lateral osteotomies and to medialize the lateral nasal walls after hump reduction. There are various techniques for both medial and lateral osteotomies, and surgeons’ preferences for instruments to be used vary. The author prefers to perform bilateral trans­mucosal medial osteotomies with a 6 mm curved osteotome (Figure 4-11). Even with large hump reduction, it is important to make sure the medial osteotomies are completed and not left to fracture in an unpredictable fashion. Once the medial osteoto­mies are performed, bilateral, internal, low curved to high lateral osteotomies are performed. An inci­sion is made in the mucoperiosteum just superior to the attachment of the inferior turbinate at the pyriform aperture. An elevator is used to elevate the mucoperiosteum on the undersurface of the nasal process of the maxilla and the nasal bones to the point where the lateral osteotomy will meet the medial osteotomy. Once the mucoperiosteal tunnels are elevated internally, a guarded straight Nievert osteotome is used with the guard directed medial to
A
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B
Figure 4-11. Instruments for bilateral medial and
lateral osteotomies: (A) 6 mm curved osteotome; (B) guarded straight Nievert osteotome.
the nasal bones. This allows any oozing or bleeding to occur internally and not externally, decreasing swelling and bruising. Once the lateral osteotomies are performed, the nasal bones are medialized and a straight dorsal line is achieved from the frontal view, closing the open roof deformity and narrowing the nasal pyramid.
Lateral osteotomies can be performed somewhat asymmetrically if required for different sloping nasal bones and angulated noses. Most commonly, a double osteotomy is performed on the sloping side to allow the nasal bone to move inward and match the length of the opposite nasal bone. One can achieve straightening of the nose in combination with septoplasty and dorsal cartilaginous spreader grafts with these techniques. Occasionally, when the nasal bony pyramid is deviated from the nasion to the rhinion, either congenitally or due to trauma, a transverse root osteotomy is required. medial and lateral osteotomies are completed, the nose does not move to midline, it is because a trans­verse cross-fracture has not occurred. A transverse root osteotomy is performed with a 2 mm oste­otome transcutaneously through a small stab inci-
5
If, after the
Profi le-plasty: The Bony and Cartilaginous Nasal Vault / 53
sion of the nasion. Once this is performed, the nose will straighten from the nasion to the rhinion.
Radix Grafts
Determination of whether augmentation of the low radix will be necessary is made at the time of the consultation. As mentioned previously, it is extremely valuable to consider augmenting the radix so as to achieve a straight dorsal profile line with minimum reduction of the bony and cartilaginous parameteral structure.6 This can be accomplished by augmenting the radix if the nasal frontal angle is inferior to a horizontal line corresponding to the superior palpebral fissure. This can be easily visual­ized by the patient and the surgeon using compu­ter imaging prior to surgery. Profile alignment, in both the three-quarter and lateral view, is enhanced by the radix graft (Figure 4-12). Radix graft often consists of a piece of cartilaginous septum that has been morselized so that sharp edges will not show when edema resolves. It is common to have a sig­nificant amount of edema in the nasal frontal angle after rhinoplasty, and it can camouflage what would be the final result if the radix graft is overly large or has sharp edges. Some surgeons prefer dicing car­tilage and wrapping it in temporalis fascia to make sure there is no firm radix graft 6–9 months postop­eratively.7 The radix graft is placed after the medial and lateral osteotomies and final rasping have been performed.
Complications of Profile-plasty and
Management of the Bony Nasal Vault
There can be errors of omission8 in performing profile-plasty. One common error of omission is failure to perform adequate lateral osteotomies, leaving an open roof deformity or overly wide nasal pyramid; the second most common error is leaving a residual hump at the bony rhinion; and the third most common is not performing adequate lateral osteotomies to correct a deviated nasal pyramid.
Errors of commission are, unfortunately, com­mon as well.9 Overly aggressive bony hump reduc­tion with under-reduction of the cartilaginous dorsum or loss of tip support creates a classic pol­lybeak deformity and an operated-looking nose. As mentioned previously, failure to support the mid­dle nasal vault can result in late contractures of the upper lateral cartilage and an hourglass deformity or dorsal depressions.
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A
B
Over-reduction of the bony and cartilaginous dorsum can result in saddle nose deformities or a “ski slope” appearance to the nose. Correction of saddle nose deformity requires onlay grafting with septal cartilage graft, auricular cartilage, rib car­tilage, or alloplastic material, such as Gore-Tex (polytetrafluoroethylene) (Figure 4-13). Loss of car­tilaginous support via overly aggressive septoplasty can create cartilaginous dorsal saddling or complete loss of support of the mid-nasal rhinion due to col­lapse of the “K” area of the bony and cartilaginous dorsal septum. Another error of commission is overly aggressive augmentation of the nasal dorsum, creat-
Figure 4-12. (A) Lateral views
of preoperative and postoperative radix graft augmentation. (B) Oblique view of preoperative and postoperative radix graft augmentation.
ing overly wide nasal pyramids, irregular appearance on the frontal view, and loss of the nasal frontal angle. This is most commonly seen with Silastic implants or cranial or rib grafts placed for dorsal augmenta­tion. AlloDerm or acellular cadaveric collagen matrix grafts are useful in thin-skinned individuals to cam­ouflage potential dorsal area irregularities from nasal bones, upper lateral cartilages, or spreader grafts.10 In the author’s experience, such grafts are not long lasting and a “shrink wrap” phenomenon will occur despite the presence of these grafts. The patient’s own temporalis fascia is more effective in combination with crushed cartilage
11
as camouflage grafts over the
Figure 4-13. Lateral view
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(or oblique) of preoperative
patient and postoperative dorsal
augmentation with autogenous
cartilage and Gore-Tex sheeting
to correctan iatrogenic saddle
nose deformity.
Profi le-plasty: The Bony and Cartilaginous Nasal Vault / 55
long term. Crushed cartilage can be used to soften the
rhinion and the supratip area and to provide a thicker
cushion of fibrous material between the dorsal nasal
skin and the underlying bony and cartilaginous
structure. Unilateral depressions can be corrected
with septal cartilage onlay grafting, which is beveled
and morselized so as not to show edges.
In summary, management of the bony nasal vault in profile-plasty can be one of the more chal­lenging aspects of rhinoplasty surgery. A carefully planned approach and the use of digital imaging to predict final aesthetic results can assist in achiev­ing a satisfactory postoperative result and a happy patient. Attention to the details of every aspect of the profile-plasty is imperative to ensure the most natu­ral appearance and to minimize postoperative com­plications. Despite every effort to minimize the need for revisional surgery, there is a 5% to 7% chance of unpredicted irregularity occurring in the postop­erative patient.
12
Each patient needs to be advised of this prior to undergoing rhinoplasty. Correction of minor postoperative irregularities or asymmetries can be done at a minimum of 6 months to 1 year postoperatively.
References
1. Orten S, Hilger PA. Facial analysis of the rhinoplasty
patient. In: Papel ID, ed. Facial Plastic and Reconstruc­tive Surgery. 2nd ed. New York, NY: Thieme Medical Publsihers, Inc; 2002:361–368
2. Crumley RL, Lanser M. Quantitative analysis of nasal tip projection. Laryngoscope 1988;98:202–208
3. Rohrich RJ, Hollier LH. Use of spreader grafts in the external approach to rhinoplasty. Clin Plast Surg. 1996;23(2):255–256.
4. Constantinides MS, Adamson PA, Cole P. The long­term effects of open cosmetic septorhinoplasty on nasal air flow. Arch Otolaryngol Head Neck Surg 1996;122:41–45
5. Most SP, Murakami CS. A modern approach to nasal osteotomies. Facial Plast Surg Clin North Am 2005;13:85–92
6. Daniel RK. Middle Eastern rhinoplasty in the United States: part I. Primary rhinoplasty. Plast Reconstr Surg 2009;124:1630–1639
7.
Daniel RK. Mastering Rhinoplasty. Heidelberg, Germany: Springer. 2009
8. Cobo, Roxana M.D.Correction of Dorsal Abnorma­lities in Revision Rhinoplasty.Facial Plastic Surgery. Revision Rhinoplasty. 24(3):327–338, August 2008.
9. Sandel, Henry D. IV M.D. 1; Perkins, Stephen W. M.D. Management of the Short Nose Deformity in Revision Rhinoplasty.Facial Plastic Surgery. Revision Rhinoplasty. 24(3):310–326, August 2008.
10. Toriumi, Dean M. MD Autogenous Grafts Are Worth
the Extra Time.Archives of Otolaryngology — Head & Neck Surgery. 126(4):562–564, April 2000.
11. Tardy, M. Eugene Jr.; Zide, Barry M. M.D., D.M.D.
Pp. 106. Raven Press, New York, N.Y., 1990.Surgical Anatomy of the Nose.Plastic & Reconstructive Surgery. 88(1):165, July 1991.
12. Bagal AA, Adamson PA. Revision rhinoplasty. Facial
Plast Surg. 2002;18(4):233–244.
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Posttraumatic Nasal
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Deformity and Nasal Fracture Management
Rami K. Batniji, MD, FACS and Stephen W. Perkins, MD
5
Introduction
In this chapter, we review the management of the acute nasal fracture. The nasal bones are the most commonly fractured bones in the face. Acute nasal fracture may result in both nasal deformity and nasal airway obstruction. However, some controversy still surrounds the management of acute nasal fractures. A review of the literature demonstrates a lack of consensus about the timing of repair of the acute nasal fracture, the anesthesia used during the repair, and the type of procedure performed. Furthermore, the frequency of post-reduction nasal deformities reportedly requiring subsequent rhinoplasty or septo-rhinoplasty ranges from 14% to 50%.
A thorough history of the mechanism of injury and a detailed physical examination guide the sur­geon in deciding how to treat the acute nasal frac­ture, with special attention dedicated to the septum, because improper reduction of the injured septum is the usual cause for the high incidence of post­reduction nasal deformities.
Incidence
Nasal bones are the most commonly fractured bones in the face. While reports estimate the annual incidence of nasal fractures in the United States as 52,000, the actual number may be higher for a variety of reasons, including the fact that severely
traumatized patients with life-threatening injuries may have nasal fractures that go unrecognized.1 The mechanism of injury is usually blunt trauma, which and can occur in assault, motor vehicle accidents, falls, or sports-related injuries.2 Previous nasal sur­gery may affect the incidence of acute nasal frac­ture; a patient who undergoes rhinoplasty is at an increased risk of nasal fracture, particularly within the first year following the rhinoplasty procedure.
Nasal fractures in the pediatric population may be overlooked. The pediatric nose is mostly carti­laginous and the nasal bones are small; therefore, in comparison to the adult nose, the pediatric nose is softer, more compliant, and less likely to sustain displacement when fractured. Yet, pediatric nasal fractures do occur. A review of the pediatric facial fractures in the National Trauma Data Bank dem­onstrated a 30.2% incidence of nasal fractures in children and adolescent trauma patients (ages 0–18
4
years).
The most common mechanisms of injury are motor vehicle accidents, violence, falls, and sports-related injuries (Figure 5-1). Another poten­tial cause of nasal fracture in the pediatric popula­tion is birth trauma. Birth trauma, from intrauterine forces, breech delivery, or forceps-assisted delivery, may result in congenital deviation of the nasal sep-
5
Although the deviation can be treated easily,
tum. expeditiously, and usually without complication in the neonatal period, the deviated septum can be overlooked. The pediatric nose is very susceptible
3